Trolley for electric railways.



.L H. MOUNTAN, DBCD. L. immuni, AnnmIsTBA'rnIx. TROLLEY FR ELECTRIC BAILWAYS.

Siwa/M in, ecease,

UNITED STATES PATENT OEEICE; l

JAMES H. MOUNTAIN, DECEASED, LATE OF TERRE HAUTE. INDIANA, BY LAURA. MOUNTAIN, ADMINISTRATRIX. OF TERRE HAUTE, INDIANA.

TROLLEY FOR ELECTRIC RAILWAYS.

Specification of Letters Patent.

Patented July 11, 1911.

Application vtiled March 31, 1911. Serial No. (518;104.

'lb all whom itY may concern:

Be it known that JAMES Il. Molnmix, deceased, late a Citizen of the United States.

'residinr at Terre Haute. -in the eount'lv of the eondurling wire, when the ear upon whieh the trolley is applied moves upon a eurved sei-tion of the trat-k, and under all other eoiulitions whieh neew iiate the angular disposition of the trolley wheel with relation to its axis or to the eomlueting Unire. t Y l A further ohjeet of the invention resides in the provision of very simple and ellieieut means lor seeuring a eontinuons eleetrieal eonneetion het ween the frame of a harp in whieh the wheel is mounted and the trolley pole.

With the ahove und other'ohjwts in View.

the invention eonsists of the novel features f of eonstrlu'tion. eolnhinattou und alrangenient of parts hereinafter fully lexserilwil and elamled, and llustrated in the aemu panymg drawings. in wluelrm Y` 9 to receive the interiozly threaded tubular portion 1l of the wheel frame or harp 10. The eufl of this tubular portion of the harp engages the end ot" the tubular pole when the partsareproperly assembled. The ineinher 8 has threaded orothenriseixedtherein a stud 12 which projeets through a short. eiruulnterential slot 13 in the pole 'lhe nielnher 8 is adapted to turn or rotate within the tuhular pole. and sueh turning more inentis limited hv the stud 12 engaging the opposite end ofthe slot 13 as will more fully appear from the following deseription'.

'lhe cylindrical meinhers (t and are eonneeted h v means of a flat lpring' H. upon eaeh end of whieh an eye 15 is formed for engagement in a soehet, orreeess 1G in the opposed ends of the members and S. lins 17 extend transversely through the ends of said members and through said eyes. This llat metal spring M normall)y arts to hohl the upper ('ylindrieal meinher H against ro- A tation in the end otl the trolley pole. in

whieh position the projeeting end of' the Stud l2 is centrally disposed in the slot 13l as shown in Fig. 2.

'l`he opposed upper ends ol' the harp l0 have formed thereon the inwardlyextending tnhular h es IS upon whieh the trolley wheel tti is rotatahly mounted. The opposed end.`A of the hosses 1S are rounded or eonrex in form as indieated at 2t). The wheel ttl is eenlrally provided with an openlFigure I is an elevation of a trolley pole hing. the ends 2l whieh open upon the oppo- 'designates the ordinary tubular trolley pole whilh is adapted to reveive a eylindriral von member ti which is disposed in said tuhe wine di tance below the upper open end tta-wot and is seeurely lixed inthe saine 'h v meanot' a rivet 7. A second eylindrieal lneinher S is arrangedl in the tuhular trolley pole and projects beyond the upper open end thereof. This projecting' portion of the member 8 is provided with the screw threads site famthereot'. reeeiving th tubular lnwses-IS. 'lhe rentral portion of the opening in the trolle \"\\-heel is eousiderably reduced in diana-ter in eomparisou with the end portions thereof as shown at "2, The inner exnlal ot' the portions 2l of the axial opening in tln` trolley wheel have their wall 'urred as shown at 23 for Contact with the rounded or convex ends 20 of the qvlimlrieal laisses 1S. 'ithin the bosser 18 the rolled springs .4 are arranged. said springs engaging the eireumferential wall at the ends of the ventral eontrax-.tod p01? tion 22 of the opening in the wheel, and with the side arms of tlv: trolley harp. These springs normally uct th eentrallg1 p0- ston the wheel 19 between the opposed Sides of the supporting harp or frame. Upon striking a bend in the conducting wire or a curve in the track therebycausin the wire to bear in the groove of the whee upon one side of its center, the wheel will be moved to a plane wherein its axis of rotation will be disposed at an angle to the norprovided which may be integrally formed with the rotatable cylindrical member 8 or separately constructed and secured thereto at one of their ends. These spring arms extend between the opposite sides of the trolley harp or frame and substantially onehal of their length are engaged therewith. The upper ends of these arms are, however,

bowed inwardly and the extremities thereof i'.:ovably disposed upon the tubular bosses i? nl' the frame, the ends of said arms being nroviitd with openings 26 to receive the mwa The ends of these spring arms, it

enh" be noted, are'disposed in close contact with the opposite faces of the wheel l Afor a suiiicient distance around the bosses 1S to insure the same remaining at all times ir. engagement therewith so that the electrical current. will be pro erly conducted fromY said wheel to the trolley pole.

[n the operation of the improved wheel, x:pon the same' striking a bend in the wire, rl'ieharp and the wheel move. bodily upon the end of the pole, the member 8 rotating in the same until the stud 1Q engages the end of the slot 13. It will be obvious that in this movement thc flat metal spring 14 will be twisted. By mounting the wheel 19 for independent movement in the harp, it at all times remains in firm engagement upon the conducting wire so tbatthe' will be no interruption whatevgroftlie current. .The parts are immediately returned to their normal positions when the pole is disposed in its usual position between the wire and th car upon which it is mounted.

It will be seen that-by mounting the wheel in the manner specified, the use of the ordinary axle is entirely dispensed with, thus eliminating one of the items'of greatest ex-i. pense. in the construction of such devices while at the same time the proper operation and a high"degrce ofeiciency is obtained. ln the ordinary form of trolley eniploying the usual axle on which the wheel i z'nounted. it is necessary to provide lubri' #ating means, or the axle soon becomes greatly, worn and must be frequently replaced.A The device is also exceedingly durable and the various parts thereof may be easily and quickly assembled.

While there is shown and described the preferred construction and arrangement of the various parts, itwill be understood that the invention is susceptible of considerable modification without departing from the as sential feature or sacrificing any of the aflvantages thereof.

Having thus described the invention what is claimed is 1. In a trolley for electric railways, the

combination with a tubular pole, o a cylindrical member rotatable in said pole and projecting beyond one end thereof, a trolley harp having a tubular portion for threaded engagement on the projecting end of said member, means normally holding said cyliudrical member yieldingly against rotation, a wheel rotatably mounted in the harp, and flexible electrical conducts extending from the `arid of said cylind' cal member and engrrgg'with the opposite' faces of said' wheel. R i

2. In ai trolley for electric'railii'ays, the combination with a. tubular pole, of cy# lindrical members arranged in spaced relation Within said pole, one of said members being rotatable therein and the other rigidly secured to the pole, a resilient metal bar eo nnecting the opposed ends of said members,

'said trolley pole having a circumferential slot therein, a stud fixed to the rotatable wheel arranged between said plates and hav-l ing an axial opening. said bosses engaging in the opposite ends of said opening, springs arranged in said 'bosses and engaging the Wheel to maintain the same normally in a rotative plane parallel to the spaced plates of the harp, and flexible electrical conductors carried by the pole and extending bctween said spaced plates, the ends of'said conductors being movable upon said tubular bosses and engaged with the faces of the .wh-eel. i

4. In a trolley for electric railways, the

combination with a pole, of a harp arranged' on the end of said pole, said harp compris-p ing spaced plates having tubular bosses.

formed lupon their opposed faces, a trolley wheel arranged between said plates provided With an axial opening diametrically enlarged at its ends to receive said tubular bosses, a coiled spring arranged in each ofV said bosses engaging the harp plates and the wheel at the opposite ends of the central .'untrzlcted portion of the axial opening of Tn tcstmony whereof hereunto all". my tlm same to yxcldngly maintum said wheel signature 1n the presenve of two Wxtnesses. 19

in a rotative plane parallel to the harp LAURA MOUNTAIN,

-plates :md ccnirnlly lwtwcen the same, and Admnstmfrv of the csfafe of Jams H. 5 llvxble electrical conductors extending from .ll mutui-1r, (Incense/.

the trolley pole movzxllo on said bosses and Witnesses:

closely engaging tlm opposite fuocs of the MARGARET CREAI.,

EDWARD H. CREAI..

wheel. 

